Los Angeles Mayor Antonio Villaraigosa, right, faces reporters as Miami Mayor and President of the U.S. Conference of Mayors Manuel Diaz, left, looks on during a news conference at the Rhode Island Convention Center, in Providence, R.I. , during the annual U.S. Conference of Mayors meeting, Friday, June 12, 2009. AP Photo logo AP Photo 5 months ago

Los Angeles Mayor Antonio Villaraigosa, right, faces reporters as Miami Mayor and President of the U.S. Conference of Mayors Manuel Diaz, left, looks on during a news conference at the Rhode Island Convention Center, in Providence, R.I. , during the annual U.S. Conference of Mayors meeting, Friday, June 12, 2009.